The Research And Development Of New Self-traveling Bridge Inspection Platform

Bridge plays a tremendous role in traffic construction; the bridge number of our country is first in the world. But most of the kingdom province county bridge used many years, so the bridge maintenance unit needs to purchase high professional bridge maintenance equipment every year, however the structure of imported bridge inspection truck is complicated and expensive, therefore we design a kind of new self-traveling bridge inspection platform for mass popularization.Through comparison the advantages and disadvantages of the fold arm bridge inspection platform and truss bridge inspection platform, because most of bridges are the medium and small bridge in our country, chose jacket fold type structure scheme as adopts arm; to reduce chassis cost of the vehicle, in reference to the car chassis based on design the hanging chassis, and in the drag on track to walk the hang chassis device meet along the bridge deck bridge maintenance walk the function requirement. Research highway bridge and road city of structure, size, and referring to the highway bridge design standard, with the largest number of bridge design basis for four lanes of the whole vehicle size parameters determined basic, and set the3D model of the vehicle.Then module partition for the bridge maintenance platform and overall design for each functional module, for bridge maintenance platform jacket, namely analyze the fold arm part, chose material of arm and section of form and level telescopic jib expansion plan; preliminary design drag hang chassis, and test the vehicle stability to ensure work safety and reliability; analysis the swing mechanism, select the appropriate rotary bearing model; for bridge maintenance platform of each work of the state, determine the vehicle unfolding to the status.Choose appropriate structure size for the working platform, calculation and analysis hanging basket, and the preliminary determine the hydraulic cylinder of the leveling of agencies; establish cross section of the folded arms, telescopic jib lap length and the mathematical model of boom hydraulic cylinder hinge point location, optimize the cross section, telescopic jib lap length and the boom hydraulic cylinder hinge point position of the best parameters; check the stability of horizontal telescopic jib, to ensure that work safety and reliability.Design the hydraulic drive system for bridge inspection platform, choose hydraulic transmission system type, according to fold on the requirements of the state arm structure to choose the appropriate hydraulic perform pieces; preliminary each basic hydraulic loop worked; then add the hydraulic source system and drawing system work principle diagram for hydraulic transmission, calculation hydraulic cylinder, motor and pump in the hydraulic system.